Improvement in burglar-proof safes



T09. SAEES, BANK PROTECTION AND RELATED DEVICES.

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Letters Patent No. 94,7 61, lated September 14, 1869.

IMPROVEMENT IN BURG-LAR-PROOF SAFES.

. The Schedule referred to in these Letters` .Patent and making part ofI the same.

To all whom it may concern erenoe being had to the accompanying drawings, making a part of this specilication, in whichv Figure l represents a front view of a circular safe, with the'door ajar, showing the edge view of the same, with the several ledges into whichvthe door is fitted.' Figure 2 is a section through the centre of the circular body of the safe.

Figure 3 shows a t p view section through, on the line x :l: of fig. l.

Figure 4 is a vertical section through, on the line y y of iig. 3.

The object of my invention is to make safes which' shall be burglar-proof; they being so constructed as to be impervious to diamond-pointed or other drills, or

gunpowder, -glycerine, or any explosive substance, while they are more perfectly tire-proof, and as convenient as safes constructed in any other manner.

My invention consists in al thick outside iron shell or case, next towhich is alayer of hardened steel, composed of triangular sharp-edged ribs or bars, the sharp edges bearing `against the outer shell or plate,

' their base being supported by an inner Y shell or Aplate of less thickness or safes may be made with serrated hardened steel ringsor plates', put in sections, the sharp angle edges in contact with the thick outside shell or plate, to answer the same purpose. Thespaces between the triangular ribs or bars, or the serrated rings or plates, will be lfilled with va non-conductor of heat, or tire-proof cement, so .that nospace is left, or any considerable opening can be made, to introduce gunpowder or other explosive substance into the body of the safe. A

My invention further' consists in the mode of constr-noting safes, so thatthe hardened steel ribs, serrated rings, plates, and safe-guards overlap each otherl at all of the joints, so that there is no point -in the whole structure Where a diamond-pointed or any other` drill can be used without coming in contact with the angular, hardened steel, in such position that it caunot take a hold upon it to penetrate.

The safes may be made of any desired form or shape, (the cylindrical being preferable,) the joints being all overlapped, the heads or` ends being putin place, the

plates all 'secured together by steel bolts, with hardened points, put in from 'theinside of the safe.

To enable others tofconstruct my improved burglarproof safe, I will describe it more in detail, referring y to the drawings, and to the letters marked'thereon.

I make the outside cylinder A ot plates of hard cast or of wrought-iron, and, if desired, case-hardened.

To the inner surface vof the shell or cylinderA, I iit a series of triangular ribs, or bars of steel, a, a a, which are made as hard as fire and water can make them, the ribs a a a presenting their sharpestedges to the inside surface of the cyliuderA, their base resting upon an inner cylinder, B, so as to cover its surface, and be held iirmly'together in the space c between the two cylinders. Y

In lieu of the angle ribs a a a, serrated plates of steel may be wrought and hardened, and `put in -sections, to answer the like purpose, the spaces c between the serrated 'ribs to be filled with a nou-conductor of heat, or tire-proof cement, so that no considerable amount of an opening can be made to get in any explosive substance. l

The drill-defying device, for the body of cylindrical safes, may be made of-annular rings of steel, D D, wrought with the triangular serrations running round, (as seen in figs 3 and 4,) they being hardened the same as the plates or ribs.

The heads E, or ends ofthe safe, which are made with a flat surface, have the' thick iron outside plate. To the ribs a serrated plate, l1 b, is secured by au annulus or serrated ring, d el, inside of which is the inner plate of metal F, securely bolted from the inside with steel bolts ff, or screws, the points being hardened so that no drill will take hold of them, should they be accidentally reached from the outside, they not coming through the outside case, or their position The door of the safe E is made by making one of the ends intwo parts, the joints and serrations overlapping in the same manner as the joints where the heads are tted in.

And, in order to provide for doubly securing my safe from the heads being removed by wedges or other burglar implements, I place inside the joint a rectangular flange, e e, of very tough metal, and secure it h'rmly, by the hardened steel screws t' 'i te', to both the head-plate F and inner cylinder B.

Safes may be made square, or of any desired form and dimensions, and be constructed so as to embrace all of my improvements, as above specified.

In the manufacture of' my improved burglar-proof safes, all of the parts are fitted, drilled, tapped, the bolts and screws cut and nicely fitted, before they and the ribs or serrated plates and annular rings are hardened, and they can be put together and finished in a very short time.

The manner of putting together is to place the inner cylinder B in the heavythick outer caseA; then insert the ribs a a a in the space betweenthem; iill then place the serrated rings or anges D D, and fill vthem with the cement; secure them with bolts f f.

The body is then ready to receive .the ends E, and the `insertion of the bolts ff laterally. The ange e e is then placed in the cover, over the joint, and secured by many screws t' i t' t, the. door-end secured in the same manner, with the suitable locks and Vbolt attached, and the most perfect and secure safe, against being broken open7 is produced that has ever yet come to my knowledge.

Having thus fully described my improved burglarproof safe,

What I claimas my invention, and desire to secure bylLetters Patent, is-..

1. The hardened steel triangular bars or ribs 'a aaa in combination with the outer shell or case A and the inner shell B, as herein described.

2. The serrated rings or an'ges D D, so arranged andseeured Within the outer and inner plates oreases to overlap other ribs and the joints of safes, as herein l set forth.

in the presence of WM. MCFARLAND.

Witnesses:

- JAMES P. KENYON,

WM. H. GAMMEYER.

In testimony whereof, I hereunto subscribe my name', 

